Oil-cup



T. PIHLFELDT AND F. C. HARTUNG.

OIL CUP.

APPLICATION FILED MAY 22, 1919.

Patented July 27, 1920.

NAN

@6 um NR NR Q m Q MN 6 mm Q MU hm mm \fl h QR MN QR Q UNITED STATES PATENT OFFICE.-

THOMAS IPIHLFELDT AND FELIX C. HARTUNG, OF CHICAGO, ILLINOIS.

OIL-CUP.

Specification of Letters Patent.

Patented July 27,1920.

Application filed May 22, 1919. Serial No. 298,929.

To aZZ whom it may concern:

Be it known that we, THOMAS PIHLFELDT and FELIX C. HARTUNG, citizens of the United States, residing at 4552 Dover street, and 4437 North Clark street, respectively, Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Oil-Cups, of which the following is a specification.

The present invention relates to oil cups and more particularly to that type of Oll cup wherein provision is made for the continuous feeding of oil from the cup at a slow rate and likewise for the forcible expulsion of quantities of oil therefrom under pres sure when desired:

In the accompanying drawings there are shown, in: o V V Figure 1, one form of construction embodying the present invention, and in Fig. 2, a modified form of construction, likewise embodying the invention.

Referring more particularly to the drawings, in Fig. 1, the numeral 5 designates the body of an oilcup, to which is attached a threaded nipple 6. Within the body of the oil cups is fitted the slidable cup-piston 7 provided with self-packing grooves 8 and having a central opening 9 provided with tapered or spherical bearing surface 10. A

coiled spring 11, seated in the cup below the piston 7, exerts an upward thrust thereupon. An internally projecting forked stud 12, attached to the cap 13 of the cup by riveting or other suitable means, extends inwardly of the cup and is provided in its downwardly extending legs with opposite openings, slightly offset from the center line of the cup. A rod or link 15 extends between the legs of the member 13 and is provided with a head 16 and an eye 17. A cotter pin 18 passing through the openings 14 and the eye 17 serves to attach the link 15 to the cap of the cup. At its lower end the link 15 is connected to a valve 19, the end of the link passing'into a slit or cavity formed in the valve and being secured in position by a cotter pin 21. The valve 19 is also provided with an enlarged portion 22 having a spherical bearing surface adapted to engage and fit the spherical bearing surface 10 of the opening 9 in the piston 7 and with a cylindrical portion 23 projecting through the opening 9 in the piston into the lower portion of the cup. This cylindrical projection 23, which is of smaller diameter than the opening 9, has a central bore 24 extending partially upward into the valve and communicating with a small bore 25 extending through the enlarged portion 22 of the valve and opening at a point normally slightly above the bottom of the cup piston 7. A fibrous plug 26, of felt, for instance, is inserted in the bore 24. A link 27, extending into the bore 24 of the valve 19, is pivotally attached to the latter by means of a cotter pin 28. This link extends downwardly into the bore ofthe nipple 6, the other end, being retained in position under a flanged washer29 by means of a pin 30 pressing through an eye 31 in the link; A coiled spring 32 engaging at one end a shoulder 33 in the bore of the nipple and at the other end the washer 29 exerts a thrust tending to force the rod 27 clownwardly in the cup.

In operating the device the cap 13 is raised to permit the introduction of oil into the cup. The upward movement of the cap, transmitted by link 15 and cotter pins 18 and 21, draws the valve 19 upwardly against the pressure of spring 32. The'thru'st of spring 11 causes an upward movement of piston 7, which movement is, however,'less than that of the cap 7 and valve 19. As a result the bearing surfaces of the valve 19 and the piston are disengaged and oil may flow freely through the opening 9 into the lower portion of the cup. 'When the cup has been filled the cap is replaced and forced down on the cup. The downward movement of the cap is transmitted directly through the link or rod 15, the ends of which are so proportioned as to bear directly against the cap and valve in the downward movement. While moving downwardly the bearing surfaces of the valve 19 engage those of the piston, forming a substantially tight ,7 joint, and the piston then moves downwardly with the valve, exerting a direct expulsive force on the oil in the cup below the piston. After the piston and valve have reached their normal positions, the oil in the upper portion of the cup may feed slowly through the fibrous plug 26 in the bore 23, to which it gains access through the bore 25. V v

In order that the cap may fit properly upon the cup to'permit the continuous feed of oil through the bore in the valve and" at the same time to exclude water, dust, etc., the cup is formed with a V-shaped bulge 34 intermediateits length. The upper surface of this bulge has preferably a bevel of 66 angle to a plane at right angles to the axis of the cup. The skirt 35 of the cap has a slightly greater diameter than the cup, thus fitting loosely thereover, and is provided with an outwardly extending angular presented which may not readily be cleaned.

A turning movement of the cap upon the cup will clean and seat the contacting surfaces upon each other; The slight ofii'setting oi the openings 14 in stud 12causes the cap to fit more loosely on one side than the other, thus permittingzthe' admission of air, as more fully illustrated with reference to Fig. ,2.

V of our invention wherein the piston in the cup is dispensed with. In this form of construction a cup is shown having a threaded nipple 46 and provided similarly to the form of construction illustrated in Fig. 1 with an intermediate V-shaped bulge 74 upon which seats anangularly projecting flange 76 of the skirt 75 of cup 43. An internallyprojectingforked stud 52 serves as a meansfor'the attachment of rod or link 55, a cotter pin 58 passing through cor responding openings in the legs of the stud and in the link 55, the openings in thestud being slightly offset from thecenter line of the cup. The link 55 is also provided with a head 56 which on downward movement of the cap bears directly against the stud;

At its lower end. the rod55 enters a slot 60in valve 59, being attached to the valve by means of a cotter pin 61 passing through corresponding openings in the valve and link. These parts are so proportioned that 011 downward movement of the cap and link thelink 56 bears directly against the valve. 1 The valve 59 is provided with an enlargement 62having a sphericalbearing surface which seats upon a bearing surface-50 formed within the-cup at the upper end of the-outlet her-e 40. The valve'59 projects downwardly into 'thebore 40, having an 7 upper cylindricalv portion 77 which fits closely within the bore and a lower cylindrical portion 78 of reduced diameter. In thelower-cylindricalportion 78 grooves 79 may likewise be provided.

The valve-59 is provided with a central bore 64 extending upward from the lower end of the valve and closed at the top, but communicating with a bore 65 extending at an angle through the enlargement 62 of the valve. A fibrous plug 66- is inserted in the valve. A link 67 is attached tothe lower end of valve 59 by a suitable cotter pin con- -bodiments thereof, it will be clearly apnection and passes downwardly in the bore of the nipple through a flanged washer 69,

being maintained in its position relative r Inthis form of construction, when the cap is raised to permit the supply of oil to the cup, the valve 59 is raised to a. position such that the reduced portion 78 of the cylindrical projection of the valve is at the entrance to the oil outlet 40. Oil is thus permitted to .fiow freely through the cup. WVhen filled, on forcing the cap down upon the cup the valve is forced down into thebore. hen the fitted portion 77 of the valveenters the bore the valve acts a solid piston, and. forcibly expels oil from the cup. When the valve is seated oil may feed slowly and 1 continuously from thecup through bore 65, :In Fig, 2'is illustrated, an'embodiment fibrous plug 66 and-bore 64.

It is readily apparent that in either form of construction by pumping the cap up and down oil may be forcibly expelled through the oil outlet 01'' the cup'into the bearing to which the cup is attached.

Although .we have described our invention in connection with certain specific emparent that the details of these embodiments as hereinbefore set forth are not intended to limit the scope of the invention except in so -far as included in the accompanying claims. 7

I claim r 1. In an oil cup having a continuous oil feed a body portion having an intermediate outward bulge the diameters of the body portion above and below said bulge being approximately equal and. a cap having a skirt fitting over the upper part of the body portion of the cup and an outwardly ex- 7 tending flange seated upon the bulge on the body portion.

2. In an oil cup having a continuous oil feed, a body portionhaving a circumferential .V-shaped bulge and a cap: having a depending skirt fitting loosely over the upper part of the cup, said skirt having an outwardly extending flange seated upon the bulge on the body portion, said flange being tapered to the apex of the. bulge.

3. In an oil-cup having a continuousoil feed, a-body.portion'having a circumferential V-shaped bulge and a cap having a depending skirt fitting loosely over the upper part of thecup, said skirt having an outwardly extending flange seated upon the bulge. on the body portion, and means within said cup for exerting-inwardtension eccentrically upon the cap.

4. In an oil cup, means for controlling the flow of oil within the cup, said means comprising a valve having a depending projeotion, a bore extending upwardly through said projection and partially through the valve, a bore extending downwardly from the upper portion of the valve to communicate with the first-mentioned bore, and a fibrous plug in the first mentioned bore.

5. In an oil cup, a body portion, a piston movable therein, said piston having an opening therein, a valve adapted to seat upon the opening in the piston, said valve being provided with a bore affording communication between the upper and lower surfaces of the piston, a fibrous plug in "said bore, means for moving the valve together with the piston downwardly in the cup and means for independently moving the piston upwardly when the valve is ralsed.

6. In an oil cup, a body portion, a piston movable therein, said piston being prolng, a bore extending through the valve, a

fibrous plug in said bore, a cap, a link connecting the valve with the cap whereby the valve may be reciprocated with the cap and means for moving the piston upwardly independently of the valve.

THOMAS PIHLFELDT. FELIX C. HARTUNG. 

